28260332208 has 240 divisors, whose sum is σ = 85504813056. Its totient is φ = 8691217920.

The previous prime is 28260332167. The next prime is 28260332257. The reversal of 28260332208 is 80223306282.

28260332208 is a `hidden beast` number, since 28 + 2 + 603 + 3 + 2 + 20 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11050866 + ... + 11053422.

Almost surely, 2^28260332208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28260332208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42752406528).

28260332208 is an abundant number, since it is smaller than the sum of its proper divisors (57244480848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28260332208 is a wasteful number, since it uses less digits than its factorization.

28260332208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712 (or 2703 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 28260332208 in words is "twenty-eight billion, two hundred sixty million, three hundred thirty-two thousand, two hundred eight".